Westhold TX3-9V Automobile Race Management Transmitter User Manual TX3 9V
Westhold Corporation Automobile Race Management Transmitter TX3 9V
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User Manual
FCC ID: NKBTX3-9V
Westhold Corporation
TX3-9V Transmitter User Manual (Draft)
Overview
Thank you for selecting the Westhold TX3-9V transmitter. It is part of a sophisticated electronic timing and
scoring system, the RMS-3. The lightweight and compact TX3-9V device operates on a standard 9 volt alkaline
battery. It is easy to install, operate and maintain.
Operation Directions
TX3-9V Illustration
The TX3-9V operates on a standard 9 volt alkaline battery. The battery can be inserted by first removing the small
Phillips head screw and removing the battery compartment lid. Slide the battery into the compartment with the
terminals of the battery coming in contact with the spring contacts as shown in the diagram below:
It does not matter which battery terminal comes in contact with which spring contact. The TX3-9V will function
with the battery in either orientation. Once the battery has been placed in the compartment, check to see that the
green LED indicator light flashes. If the red LED light flashes, it indicates the battery is weak and therefore should
be replaced. If both LED lights come on, remove the battery and reinstall the battery as per the instructions above.
Place the battery lid back on the TX3-9V and screw down the lid. A fresh 9 volt battery will power the TX3-9V for
72+ hours.
Battery Compartment Lid
Low Battery LED(Red)
Normal Operation LED(Green)
TX3-9V
Phillips Screw
Spring Contacts
FCC ID: NKBTX3-9V
Installation
Fasten the TX3-9V on the car or motorcycle using pop rivets or some other suitable fastening. Be sure to place all
transmitters in the same location on each vehicle. The best possible orientation of the transmitter is shown below
with the longest edge of the transmitter parallel to the Start/Finish line where the loop antenna is located.
Maintenance
The TX3-9V requires minimal maintenance. Cleaning the spring battery contacts can be done with a damp cloth or
cotton swab. The external plastic may be cleaned with a damp cloth. Do not use solvents to clean either the plastic
or the battery contacts.
Specifications
Specification
Dimensions Approx. 3.25” x 2” x 0.75”(≈8x5x2cm)
Weight Approx. 4oz(100 grams)
Temp Range 32-122°F (0-50°C)
Battery Life 72 Hours Nominal(100 Typical)
Operational Indicator LED
Low Battery Indicator LED
Humidity 100% Relative
FCC Notice
FEDERAL COMMUNICATIONS COMMISSION RADIO AND TELEVISION
INTERFERENCE STATEMENT
Changes or modifications not expressly approved by Westhold Corporation could void the user's
authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received including interference that may cause undesired operation.
FCC ID: NKBTX3-9V
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